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PDF XL2596 Data sheet ( Hoja de datos )
| Número de pieza | XL2596 | |
| Descripción | 3A 150KHz 40V Buck DC to DC COnverter | |
| Fabricantes | XLSEMI | |
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XLSEMI
3A 150KHz 40V Buck DC to DC Converter
Features
Wide 3.6 to 40V Input Voltage Range
3.3V,5V,12V, and adjustable versions
Output Adjustable from 1.23V to 38V
Maximum Duty Cycle 100%
Minimum Drop Out 1.3V
Fixed 150KHz Switching Frequency
3A Constant Output Current Capability
Internal Optimize Power Transistor
Up to 90% Efficiency
Excellent line and load regulation
TTL shutdown capability
Built in Frequency Compensation
Built in Soft Start Function
Built in Thermal Shutdown Function
Built in Current Limit Function
Built in Short Protection Function
Available in TO-220,TO-263 packages
Applications
LCD Monitor and LCD TV
Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
Datasheet
XL2596
General Description
The XL2596 is a 150 KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 3A load with high
efficiency, low ripple and excellent line and
load regulation. Requiring a minimum
number of external components, the regulator
is simple to use and include internal
frequency compensation and a
fixed-frequency oscillator.
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function
and a short circuit protection function are
built inside. When OCP or SCP happens, the
operation frequency will be reduced from
150KHz to 30KHz. An internal compensation
block is built in to minimize external
component count.
2006 Rev 1.2
Figure1. Package Type of XL2596
1
www.xlsemi.com
1 page  
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XLSEMI
3A 150KHz 40V Buck DC to DC Converter
Datasheet
XL2596
Absolute Maximum Ratings Note1
Parameter
Input Voltage
Feedback Pin Voltage
ON/OFF Pin Voltage
Output Switch Pin Voltage
Power Dissipation
Thermal Resistance (TO220 & TO263)
(Junction to Ambient, No Heatsink, Free Air)
Operating Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 sec)
ESD (HBM)
Symbol
Vin
VFB
VON/OFF
VOutput
PD
RJA
TJ
TSTG
TLEAD
Value
-0.3 to 45
-0.3 to Vin
-0.3 to Vin
-0.3 to Vin
Internally limited
50
-40 to 125
-65 to 150
260
4000
Unit
V
V
V
V
mW
ºC/W
ºC
ºC
ºC
V
Note1: Stresses greater than those listed under Maximum Ratings may cause permanent damage
to the device. This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
2006 Rev 1.2
www.xlsemi.com
5
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XLSEMI
3A 150KHz 40V Buck DC to DC Converter
Typical Performance Characteristics (Circuit of Figure 8 )
Datasheet
XL2596
2006 Rev 1.2
www.xlsemi.com
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet XL2596.PDF ] | |
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